Reproductive system Lecture 4

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What is the result of cleavage during embryonic development?

Formation of a blastula with a fluid-filled cavity

Partitioning of the cytoplasm into many smaller cells (correct)

Slowing down of cell division

Creation of a primitive digestive tube

What is the embryonic structure formed during gastrulation?

Gastrula (correct)

Embryo

Blastula

Placenta

How is the embryo nourished during development?

Through the amniotic fluid

Through the placenta by umbilical cord (correct)

By consuming the fluid in the blastula

By direct absorption from the mother's bloodstream

What induces childbirth in humans?

Hormonal response Signup and view all the answers

When does the blastula form during embryonic development?

After about five to seven cleavage divisions Signup and view all the answers

What happens to the rate of cell division during gastrulation?

It slows down Signup and view all the answers

What is the future function of the primitive digestive tube formed during gastrulation?

Future mouth Signup and view all the answers

Where does gametogenesis occur in males?

Testes Signup and view all the answers

What is the female gamete called?

Oocyte Signup and view all the answers

At birth, where are all the primary oocytes a female will ever have present?

Paused in meiosis I Signup and view all the answers

What is the sac which contains an oocyte called?

Follicle Signup and view all the answers

What happens to the secondary oocyte during ovulation?

It leaves the ovary Signup and view all the answers

What induces the completion of meiosis II in the oocyte?

Entry of a sperm nucleus Signup and view all the answers

Where does fertilization occur?

Fallopian tube Signup and view all the answers

What is the site of gamete production in the reproductive system?

Testes in males and ovaries in females Signup and view all the answers

What is the name of the cells in male gonads that are involved in gametogenesis?

Spermatocytes Signup and view all the answers

At what stage does a secondary oocyte stop during meiosis?

Halfway through meiosis II Signup and view all the answers

What is the name of the empty remains of the follicle after ovulation?

Corpus luteum Signup and view all the answers

What alters the membrane of the oocyte to prevent attachment of other sperm?

Entry of one sperm nucleus Signup and view all the answers